Fosi Audio'S Da2120A Bluetooth 5.0 Dac Hi-Fi Stereo Receiver Audio Amplifier Product Features 2.1 Channel Hifi DAC Amplifier Support 24bit/192Khz Audio with EQ Control. 100Watts Class D power amp(50Watt x2@4ohm) with low-pass power subwoofer output and passive speakers output can drive most home speakers. Easy to build your home theater systems and enjoy Hi-Fi music with DA2120A. Multiple Input Modes. DA2120A wireless stereo amplifier supporting PC-USB/Optical/Coaxial/3.5MM AUX/Bluetooth 5.0 input can fit with most home Hi-Fi sound systems. Note: Optical interface does not support Dolby/DST audio. DA2120A adopts the Texas Instruments NE5532 operational amplifier chip. The DA2120A are high-performance operational amplifier combining excellent DC and AC characteristics, featuring very low noise, high output-drive capability, high unity-gain, maximum-output-swing bandwidths, low distortion, high slew rate, input-protection diodes, and output short-circuit protection. NE5532 are compensated internally for unity-gain operation, with specified maximum limits for equivalent input noise voltage. DA2120A with Advanced Digital Amplify Circuits that all analog signals are converted to a digital signal to make the PHASE of input and output signal keep same. Phase shift is zero. Strong anti-interference ability. High efficiency up to 99%. What You Get: DA2120A Hifi DAC amplifier x1, Bluetooth antenna x1, 24V/4.5A power supply x1, remote control x1, PC-USB Cable x1, Optical Cable x1, user manual x1, our worry-free 18-month warranty, and friendly customer service. Shipping: Shipping is complimentary within the lower 48 US States. We Do Not Ship to PO/APO Boxes, HI or Alaska We Do Not Ship Outside of the Continental US All items ship within 24-72 hours of Payment For large items that require Freight shipping a valid phone number is required to call and schedule your delivery Terms of Sale and Feedback: Feedback is extremely important to us and If you are satisfied with our transaction, please take a moment to leave Positive Feedback. YOUR Satisfaction is our #1 Priority! If there are any issues, PLEASE contact us BEFORE leaving a neutral or negative rating so that we may resolve any concerns. We PROMISE we can make you happy if you give us a fair chance. Returns / Concerns: All items qualify for returns within 14 - 30 days of receipt. Buyer is responsible for return shipping on any item that is not damaged Please be sure this is an item you want before making your purchase. Customer Satisfaction is our TOP priority! All items are IN STOCK at time of listing. Inventory changes constantly and it is impossible to maintain a perfectly accurate count of all items. Please do not penalize us if we have to issue you a refund! Thank You For Your Business!